"Remesh" modifier hides my text object
The Remesh modifier doesn't seem to work on flat objects so you need to give your text some volume/thickness. 

In edit mode select all the faces and press E and extrude the text a little to give it some volume.

The Remesh modifier will now work but will remove all but one letter of the text until 'Remove Disconnected Pieces' is unchecked on the Remesh modifier.